5 letter words:
kreep11,
peter7,
4 letter words:
keep10,
kept10,
peek10,
peke10,
perk10,
keet8,
peep8,
perp8,
prep8,
reek8,
repp8,
trek8,
peer6,
pere6,
pert6,
pree6,
rete4,
tree4,
3 letter words:
kep9,
eek7,
eke7,
pep7,
pee5,
per5,
pet5,
rep5,
ere3,
ree3,
ret3,
tee3,
2 letter words:
pe4,
er2,
et2,
re2,